void test_T3as(const Tensor1<double,3> &t1_2,
	       const Tensor2<double,3,3> &t2_2,
	       Tensor3_dg<double,3,3> &t3dg_1,
	       const Tensor3_dg<double,3,3> &t3dg_2,
	       Tensor3_antisymmetric<double,3,3> &t3as_1,
	       const Tensor3_antisymmetric<double,3,3> &t3as_2,
	       const Tensor3_antisymmetric<double,3,3> &t3as_3);
